Yujiro Hayami (?? ???, Hayami Yujiro, 1932 – 2012) was a Japanese agricultural economist, widely considered to be an authority on the subject.
He was a Rockefeller fellow at Iowa University, a winner of Purple Ribbon Medal and a Lifetime member of the International Association of Agricultural Economists.
He is credited with the development Hayami Development Economics, an agricultural philosophy on the relationship of a community to the market and the state.